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Foods that are not good for kidneys

Kidney Conditions | Last Active: Dec 6, 2025 | Replies (49)

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Profile picture for Ginger, Volunteer Mentor @gingerw

@kenzie Welcome to Mayo Clinic Connect! As you are already finding out, what we eat can most certainly have an effect on how we feel.

As for black licorice, simply, don't!
https://www.webmd.com/vitamins/ai/ingredientmono-881/licorice
There is a compound in licorice called glycyrrhizin which can cause bad side effects to those of use with kidney disease. I don't think you want that!

Focus on the healthy foods you can eat, and get some moderate exercise!
Ginger

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Replies to "@kenzie Welcome to Mayo Clinic Connect! As you are already finding out, what we eat can..."

@gingerw Glad you posted this. I purchased some herbal teas, several have licorice root in them. I wonder how much of the glycyrrhizin ends up in a cup of tea? Guess I can always donate the tea to our church fellowship group. I did have some of the tea to sooth the throat and coughing during a recent cold/flu. It would be wonderful if companies were made aware of the issues they cause for people with high BP. Or, the licorice root for CKD. I think of the amount of sodium being dumped on food when dining out. Many of those foods have 2000-5000 mg of sodium in them, extremely high levels. Seems like a letter writing campaign needs to happen with restaurant companies, food producers and to the NIH and others.